I've had the Enabler, the VT Bass and the BDDI. Really wanted to like the Sansamp stuff, but overall, it was just a little artificial sounding to my ear. Sounded pretty great for direct recording though, but put it into a live application with an amp and pedals and you start to see where it fights with other devices. I definitely preferred the VT for the mid control, but I needed something that will play nice live and recording. The Enabler on the other hand was extremely transparent. It worked great (again) for recording direct, IF you really want to keep your inherent bass sound intact without any bells and whistles. The reason it didn't click with me though overall, is for the $300 price tag, I was expecting to be blown away and I just wasn't. It basically just sounded like my bass with some very slight EQ enhancements. Maybe that will work for somebody else, but a plain old direct box seemed to work almost as good for direct recording IMO. With the Enabler in front of an amp (not bypassing the pre-amp), it really wasn't noticeable at all. So I decided, if it's just going to boil down to a subtle/pristine EQ, then I would prefer something with more control, sweepable mids, and cheaper... I generally like the pre on my amp, so I would just want a pre-amp pedal to sweeten things up. The Enabler came close, but for the price tag, it did not ultimately seem worth it to me. I was hoping it would 'enhance' my bass, and it kind of did, but not enough for $300.
The headphone amp is very innovative though, so if you could make use of that (which I really didn't need to) then it would be a great buy.
